From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9F8E3EB26ED for ; Tue, 10 Feb 2026 17:09:30 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vprEi-00011B-Ap; Tue, 10 Feb 2026 12:09:16 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vprEd-0000wX-FZ for qemu-devel@nongnu.org; Tue, 10 Feb 2026 12:09:12 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vprEb-0008Jx-Eh for qemu-devel@nongnu.org; Tue, 10 Feb 2026 12:09:11 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1770743347; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=xjVXFI2NTkHdLDw3FKaxDkw1QalLjbBjRBXhGbcWsZo=; b=exLTytCbokdWUwiLerJ6fMkivmUknMo058067+dLdQbTzZ6NLpL8t++rOwHpusfScNVRXl CrcUwi+oHY2wfrB4gPWDIHYketSlFLCOQCiryJt7A8aKJY9gGrAKhIyDCK0hY8f54Ga1wl ljCCapTPeLOF93avcB6mEgHiTBJrb+A= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-189-p59Y57ciM0CyDCxzREj2TA-1; Tue, 10 Feb 2026 12:09:06 -0500 X-MC-Unique: p59Y57ciM0CyDCxzREj2TA-1 X-Mimecast-MFC-AGG-ID: p59Y57ciM0CyDCxzREj2TA_1770743345 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 4577D1955DC0; Tue, 10 Feb 2026 17:09:04 +0000 (UTC) Received: from redhat.com (unknown [10.44.33.253]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 9AD9B30001A5; Tue, 10 Feb 2026 17:09:01 +0000 (UTC) Date: Tue, 10 Feb 2026 18:08:59 +0100 From: Kevin Wolf To: Oblivionsage Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, qemu-stable@nongnu.org, Hanna Czenczek , Fam Zheng Subject: Re: [PATCH] block/vmdk: fix OOB read in vmdk_read_extent() Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass client-ip=170.10.129.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Am 10.02.2026 um 13:46 hat Oblivionsage geschrieben: > From d335821a1f814eb3059ab5e6a7cd771360b698c4 Mon Sep 17 00:00:00 2001 > From: Oblivionsage > Date: Tue, 10 Feb 2026 13:33:25 +0100 > Subject: [PATCH] block/vmdk: fix OOB read in vmdk_read_extent() > To: qemu-devel@nongnu.org > Cc: qemu-block@nongnu.org, > qemu-stable@nongnu.org, > kwolf@redhat.com, > hreitz@redhat.com, > fam@euphon.net > > Bounds check for marker.size doesn't account for the 12-byte marker > header, allowing zlib to read past the allocated buffer. > > Move the check inside the has_marker block and subtract the marker size. > > Fixes: CVE-2026-2243 > Reported-by: Halil Oktay (oblivionsage) > Signed-off-by: Halil Oktay (oblivionsage) Thanks, applied to the block branch. Kevin